MPD: output/Timer.hxx Source File

MPD 0.20.15

Timer.hxx
Go to the documentation of this file.
1 /*
2 * Copyright 2003-2017 The Music Player Daemon Project
3 * http://www.musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef MPD_TIMER_HXX
21 #define MPD_TIMER_HXX
22
23 #include <chrono>
24
25 struct AudioFormat;
26
27 class Timer {
28 typedef std::chrono::microseconds Time;
29
30 Time time;
31 bool started = false;
32 const int rate;
33 public:
34 explicit Timer(AudioFormat af);
35
36 bool IsStarted() const { return started; }
37
38 void Start();
39 void Reset();
40
41 void Add(size_t size);
42
46 std::chrono::steady_clock::duration GetDelay() const;
47
48 private:
49 static Time Now() {
50 return std::chrono::duration_cast<Time>(std::chrono::steady_clock::now().time_since_epoch());
51 }
52 };
53
54 #endif
AudioFormat
This structure describes the format of a raw PCM stream.
Definition: AudioFormat.hxx:37
Timer::Add
void Add(size_t size)
Timer::IsStarted
bool IsStarted() const
Definition: Timer.hxx:36
Timer::Timer
Timer(AudioFormat af)
Timer::GetDelay
std::chrono::steady_clock::duration GetDelay() const
Returns the duration to sleep to get back to sync.
Timer::Start
void Start()
Timer::Reset
void Reset()
Timer
Definition: Timer.hxx:27